Smoking pipe



Aug- 7, 1962 P. J. STM-:GER 3,048,179

SMOKING PIPE Filed July 24, 195s n n will. 1.1111101111 Le.

F166. m30 FG-4- BY ZQQWM.'

ATTORNEY United States Patent Office 3,048,179 Patented Aug. 7, 1962 3,048,179 SMOKING PIPE Philip J. Stieger, 785 Armstrong Ave., St. Paul, Minn. Filed July 24, 1958, Ser. No. 750,731 3 Claims. (Cl. 131-195) This invention relates to an improvement in smoking pipe and deals particularly with a pipe capable of providing a cool smoke.

In my previous patent, No. 2,354,712, I disclose a pipe having a hollow barrel connected with the pipe bowl and connected by passages through the mouthpiece of the pipe to the bit end thereof and provided with a coaxial tube extending through the barrel and communicating with atmosphere at opposite ends. While this pipe has functioned very effectively for many years, in actual produc tion certain changes have been found desirable. It is `an object of the present invention to incorporate these changes in the present application.

While such tubular projections operated successfully, it has been found that by molding the mouthpiece in one single integral part, the tubular projections may become a part of the molding `and need not be separately attached or embedded in the mouthpiece. Furthermore, it was found that by molding the projections integral with the mouthpiece, these projections may assist in supporting the internal cooling tube so that this tube may be held at all times in alignment with the mouthpiece.

An added feature of the present invention resides in the provision of a stop shoulder molded at the end of the socket into which the cooling tube extends in the mouthpiece. In my previous construction, the cooling tube was inserted into a cylindrical socket or passage which communicated with a ilue leading vertically through the mouthpiece. In some instances, the cooling tube could be forced too deeply into the socket, thereby obstructing the vertical flue through the mouthpiece and closing the end ofthe cooling tube. When this occurred, the opposite end of the cooling tube was not properly supported in its supporting plug at the opposite end of the barrel andthe pipe did not function properly. This difculty has now been obviated by providing an internal shoulder in the socket against which the end of the cooling tube may engage to ensure the proper relation of the cooling tube.

A further feature of the present invention resides in the manner of reinforcing the pipe barrel. Due to the fact that the present pipe incorporates a coaxial cooling tube, the barrel of the pipe is usually constructed of somewhat larger diameter than other pipes. If the diameter of the barrel were to be decreased, the wall of the barrel would be thin and the chance of breakage greatly increased. In order to correct this difliculty and to permit the reduction of the outer diameter of the barrel without weakening the barrel, a thin reinforcing sleeve of metal or other suitable material is inserted within the barrel. This sleeve is provided with a reversely formed reinforcing member which extends over an end of the barrel and encircles or partially encircles the barrel end. As `a result, the barrel is not only internally reinforced, but prevented from chipping or breaking when the mouthpiece is inserted o-r withdrawn.

These and other objects and novel features of the present invention will be more clearly and fully set forth in the following speciiication and claims.

In the drawings forming a part of the specification:

FIGURE 1 is a perspective view of the pipe in assembled ferm.

FIGURE 2 is a central vertical sectional view longitudinally through the pipe.

FIGURE 3 is a horizontal sectional view through the mouthpiece end ofthe pipe with the cooling tube attached thereto.

FIGURE 4 is a sectional view through one of the plugs used to normally close the open end of the barrel.

FIGURE 5 is a sectional view through the cooling tube attached to the mouthpiece, the position of the section being indicated by the line 5 5 of FIGURE 3.

FIGURE 6 is a sectional View through the mouthpiece, the position of the section being indicated by the line 6-6 of FIGURE 3.

In general, the pipe of this invention is indicated byv the letter A and includes a bowl 10 which is integral with or `attached to a barrel 11. Obviously, the shape of the bowl may be varied widely in design. The barrel 11 is preferably hollow and cylindrical in form and is connecltd to the interior of the bowl through a passage such as In the preferred form of construction, a thin wall metal lining sleeve 13 is provided inwardly of the barrel 11 and is provided with an aperture 14 communicating with the passage 12. Also, in the preferred form, a portion of the sleeve 13 is formed or spun outwardly at one end as indicated at 15 and is then formed rearwardly as indicated at 16 to provide a sleeve concentric with the sleeve 13. The sleeve 16 is designed to encircle the end of the barrel 11 and to reinforce this barrel end from injury.

The mouthpiece of the pipe is indicated in general by the numeral 17. The mouthpiece 17 includes a plug portion 19 having a cylindrical outer surface 20' designed to fit into the end of the barrel 11. Adjoining the plug p0rtion 19 is provided a larger diameter shoulder forming portion 21 preferably having a similar diameter to the outer diameter of the barrel 11. The portion 21 of the mouthpiece lits against the end of the barrel to limit the insertion of the mouthpiece.

As is best indicated in FIGURES 3 and 5 of the drawings, a pair 0f spaced projections 22 extend forwardly from the end of the plug portion 19 having the cylindrical portion 2t). These projections 22 are preferably provided with an larcuate outer surface 24 which may taper slightly towards the ends of the projections or may -be olfset inwardly lfrom the periphery of the plug portion 19 so as to facilitate the insertion and removal of the mouthpiece.

A cylindrical socket 25 extends through the plug portion of the mouthpiece and through the shoulder forming portion 21. A stop member is provided at the base of the socket. This stop member may comprise an inwardly projecting circular flange 26 or may provide any inward projection which will limit insertion of the cooling tube. A vertical flue passage 27 extends through the body of the mouthpiece from ltop to bottom thereof intermediate the sides of the mouthpiece. This flue 27 communicates with the interior of the socket 25 to form a continuous passage.

As indicated in FIGURE 5 of the drawings, the inner surfaces of the projections 22 are arcuate as shown at 28, the radius of curvature of these surfaces being the same as the diameter of the socket 25. As a result, the projections ZZ in one sense form an elongation of the socket 25 and assist in holding the cooling tube aligned with the mouthpiece. At the same time, the cooling tube acts to protect the projections from breakage through engagement therewith.

The cooling tube 29 is of approximately the same diameteras the interior of the socket 25 and is preferably pressed int-o place to remain integral with the mouthpiece or to remain connected thereto. One end of the cooling tube 29 engages the flange 26 or other stop and is thus properly located relative to the mouthpiece. The interior of the cooling tube communicates with the flue passage 27 which traverses the pipe bit.

Smoke passages 3G which are preferably rectangular in section extend through the entire length of the bit, one such passage extending through each of the projections 22 and continuing throughout the length of the bit. As indicated in FIGURE 3, the portions of the passages 30 adjoining the mouthpiece end of the bitr `are preferably widened. The body of the bit may be conventionally shaped and is shown as comprising a vertically flattened body portion which is wider than its depth.` The extreme end of the bit may be slightly enlarged as indicated at 31 so that the pipe will not slip readily from the mouth when 1n use,

T he end of the barrel 11 opposite the mouthpiece end is normally closed by a resilient plug 32. As indicated in the drawings, the exterior of the plug is generally cylindrical and is provided with outwardly projecting angularly spaced ribs 33 which facilitate the rotation of the plug in inserting and withdrawing it and which also may have the eifect of making the periphery of the plug either hexagonal or octagonal in shape. In other words, the ribs 33 project sutliciently beyond the periphery ofthe remainder of the plug so that the two spaced ribs may rest upon a flat surface and tend to hold the pipe in an adjusted position upon a at surface when not in use.

The outer or exposed surface of the plug 32 is shown as including a concave portion 34 which communicates with a central bore 35. The exposed portion or `large diameter portion 36 of the plug 32 which bears the external ribs 33 is integral with a smaller diameter plug portion 37 which tits into the barrel 11 of the pipe. As indicated in FIGURES t2 and 4 of the drawings, the central bore 35 includes a generally cylindrical portion 39 which lits snugly about the end of the cooling tube 29 and `a flared or tapered portion 40 designed to simplify the insertion of the plug about the end of the cooling tube 29 `and to guide the end of the cooling tube into the cylindrical bore portion 39.

As indicated in FIGURE 2 of the drawings, a passage 41 extends through the bottom of the barrel 11 and through the reinforcing sleeve 13. The opening 41 is normally closed by the small diameter portion 37 of the plug 32. However, when the plug 32 is partially withdrawn, the opening 41 is exposed. This opening 41 may then serve as a drain passage for any condensate collected within the barrel 11.

As indicated in FIGURE 4 of the drawings, the small diameter portion 37 of the plug 32 may be provided with' axially spaced peripheral ribs 42 which are preferably outwardly rounded so as to slide readily within the pipe barrel. These ribs 42 oler less surface contact than a plug having a cylindrical surface vand therefore reduce the area of engagement with the pipe barrel and thus reduce the friction between the plug and the interior of the pipe barrel and serve las seals against the pipe barrel. The arrangement is such that when the plug is partially removed, at least one 'of the ribs is still engaged within the end of the barrel at the time the drain opening is exposed.

The `operation of the pipe is believed evident from the foregoing description. The smoke from the barrel is drawn through the passages 12 and 14 into the interior of the barrel surrounding the cooling tube 29. As the barrel is heated and the cooling tube is heated slightly, this heat creates `a circulation of air through the cooling tube from one end thereof to the other whenver the pipe is slightly tilted, the air passing through the cooling tube. This tube communicates with atmosphere at one end through the plug 32 and at the other end through the ue 27. As the smoke contacts the cooling tube 29 and the interior of the barrel which is cooler normally lthan the smoke, condensation is formed on the exterior of the tube yand the interior of the barrel. This condensation is not drawn through the mouthpiece or bit due to the fact that the smoke passages 30 through the extension 22 are substantially above the lower surface of the barrel when the pipe is in use.

The condensation may be withdrawn by partially removing the plug 32 to expose the drain passage 41 and permitting the condensate to drain out. The plug 32 and bowl 10 tend to hold the bowl end of the pipe somewhat higher than the bit end and at the same time, when the pipe is lying on its side, one of the projections 22 will be rotated to a position near the bottom of the barrel. Thus, if there is yany excessive amount of condensation within the barrel of the pipe, it may drain out when the pipe is not in use `and in any event, the condensation will be maintained below the level of the projections 22 when the pipe is in use.

In accordance with the patent statutes, I have described the principles of construction and operation of my improvement in smoking pipe, and while I have endeavored to set forth the best embodiment thereof, I desire to have it understood that changes may be made within the scope of the following claims without departing from the spirit of my invention.

I claim: f

l. A smoking pipe including a barrel, a bowl secured to said barrel intermediate its ends and communicating with the interior of said barrel, said barrel having open ends, a mouthpiece detachably secured in one end of said barrel, said mouthpiece having an air ilue extending therethrough between opposite sides thereof, a socket in said mouthpiece communicating with said Hue, a cooling tube engaged in said socket and extending longitudinally lin said barrel, a plug extending into the other end of said barrel and having a passage therethrough into which said cooling tube may extend, spaced projections on said mouthpiece on opposite sides of said cooling tube, said projections being integral with -said mouthpiece, and passages extending longitudinally through said projections and through said mouthpiece from end to end thereof, said projections having opposed arcuate `surfaces, having a ycommon axis, and said arcuate surfaces being spaced apart a distance substantially equal to the external diameter of said tube, said plug holding said cooling tube axially aligned with said barrel and sealing the interior of said barrel outwardly of the cooling tube from atmosphere.

2. The construction described in claim l and including shoulder means in said socket limiting the insertion of the cooling tube thereinto.

3. A smoking pipe including a barrel, =a bowl secured to said barrel intermediate its ends and communicating with the inte-rior of said barrel, said barrel having open ends, a mouthpiece detachably secured in one end of said barrel, said mouthpiece having an Iair ue extending therethrough between opposite sides thereof, a socket in said mouthpiece communicating with said flue, a cooling tube engaged in said socket and extending longitudinally in said barrel, a plug extending into the other end of said barrel and having a passage therethrough into which said cooling tube may extend, spaced projections on said mouthpiece on opposite sides of said cooling tube, said projections being integral with said mouthpiece, and passages extending longitudinally through said projections and through said mouthpiece from end to end thereof, means `on said mouthpiece at the end of said socket adjoining said air ilue to limit insertion of said cooling tube into said socket thereby preventing said cooling tube from entering said air llue to block the same, said plug holding said cooling tube axially aligned with said barrel and sealing the interior of the barrel outwardly of the cooling l*cube from atmosphere. y

References Cited in the le of this patent UNITED STATES PATENTS Werner Oat. 31, 1893 Strandt Apr. 5, 1932 Svendsen Dec. 13, 1932 Schumacher et al Apr. 17, 1934 

